They can be kept like a Snapper or Mata Mata regarding their environment, water levels/conditions and temps and are a very tough/durable turtle. They like to walk on the bottom of the tank looking for food and will feed off the top as well. Not very graceful swimmers! LOL
Tons of personality although some types can be sort of aggressive, nothing major though.
Mine are in a 20 gal long with fluorescent hood for now with the plastic rock arrangements siliconed to the sides of the tank walls to provide basking areas, some plastics plants for them to climb on and aquarium gravel for substrate. Water level is 3/4 full. Lights on for 10 to 12 hours a day.
I run an undergravel filter and an Aqua clear power filter.
Temps are between 77 and 80 degrees on average and they used to go drastically up and down during the different seasons until I added a submersible heater.
They feed on anything from freeze dried krill, earthworms, freeze dried tubifex worms, feeder fish if they catch them,
turtle pellets, sinking shrimp pellets (they LOVE these).
Basically most anything you offer them will probably be eaten.
I have Feeder goldfish in with them that were about 1 1/2 inches long and are now about 7 inches long! Musks aren't the best fish catchers. All my goldifh do have bites missing from their tail tips though! LOL
I will be transferring them all to a 40 long soon.
Good luck